METHOD OF CONTROLLING LABORATORY PRESS LOADING MODE WHEN TESTING ROCK SAMPLE Russian patent published in 2014 - IPC E21C39/00 G01N3/12 

FIELD: physics.

SUBSTANCE: method comprises, at the initial phase, shifting the position of the press plate by a given value in steps through given equal time intervals; at each step, detecting acoustic emission flux, selecting separate acoustic events, determining the flux density of the acoustic emission; when flux acoustic emission intensity reaches a given value, reducing at each subsequent step the shift value of the position of the press plate, while maintaining the acoustic emission intensity at the given level; when the value of the stepwise shift of the position of the press plate reaches a minimum allowable value and when acoustic emission intensity exceeds a given value during each subsequent stepwise shift, increasing the time interval for shifting the position of the press plate; when acoustic emission intensity subsequently falls below the given value, reducing the time interval for shifting the position of the press plate to the value given at the initial phase.

EFFECT: more acoustic events during breakdown of rock grains detected when testing a sample.

3 cl, 4 dwg